Aero-electric whistle



(No MQdefL) C. R. ALSOP.

AEROuELBOTRIC WHISTLE.

MKM

Mfg?

Patented May 4, 1897-.

U NiTnD STATES PATENT OFFICE.

CHARLES RICHARD ALsoP, or MIDDLETOWN, CONNECTICUT.

Asso-ELECTRIC WHISTLE.

j SPECIFICATION forming-part of Letters Patent No. 581,802, dated May 4, 1897.

Appnmion tied July 13,1895.' serial No. 555,995. (No man.)

To @ZZ-whom if may concern:

Be it known that I, CHARLES RICHARD An ,s01 a citizen of the United States, residing at Middletown, in the 'county of Middlesex vand State `of Connecticut, have invented a new and useful Improvement in Aero-Electric Whistles, of -which .the following is a specification.

My invention relates toalarm-signals of any kind in which a whistle or fog-horn is used for the purpose of giving notification of danger. y

The object of my invention is to supply a whistlewhich may be located at any point desired relative to the point where the motive power for operating the same is generated and the points or point at which the operation may be controlled, and by means of which a system of alarm-signals may be established along aline of railways at grade: crossings and for use in block systems.

With these and other objects inview the invention consists in the details of construction and combination of elements hereinafter set forth, and specifically designated bythe claims.

' In order that those skilled in the art to whichthis invention'appertains may understand how to make and use' the same, the construction and operation will now be described in detail, referring to the accompanying drawi ings, forming a part of this specification, in which- Figure 1 is a perspective view of my invention, showing the target raised. Fig. 2 is a vertical sectionof the pump and whistle.

In the drawings, A is an electric motor of ordinary construction secured to a base-board B and adaptedto operate the airpump and whistle C through the following mechanism:

On the shaft 1 of the motor is secured a worm 2, so as to revolve therewith, and journaledfin a frame 3 is a shaft 4, carrying a wormfwheel 5, which meshes with the worm 2, so as to revolve the shaft 4 when the .motor operates. A lever 20 is pivotedto-an extension of the frame 3 and has a cam-aperture thereon which yrides over a cam-collar 6, secured to the shaft 4, causing the lever to reciprocate vertically when the shaft revolves.

In the pump C the lower cylinder is provided with a piston composed of two disks 8,

-is adapted to close the valve-opening when the piston is forced upward, but to fly back and allow air to pass't-hrough when the piston is brought downward. 1

The upper cylinder is composed of a hood 12, secured to the collar 13 by the uprights 14, leaving a space therebetweem'forming a whistle directly connected with the pump.

15 is a supplemental armature journaled en the shaft of the motor and having its faces in such proximity tothe motor-fields as to be attracted thereby and caused to revolve. To this supplemental armature is secured a disk 16, carrying a sign 17, which is secured to said disk by the rod 18, and in the path of this rod are two pins 19, secured on the frame of the motor and against which therod abuts, thereby limiting the movement of the disk and supplemental armature.

The supplement-al armature is connected in the same electric circuit as the motor proper,

plemental armature is demagnetized and the y sign drops by force of gravity to the position shown in the dotted lines inFig. 1. Thus it will be seen that when it is desired to signal with rnyapparatus it is only necessary to close the circuit, when the armature of the motor will-revolve the shaft f1 through the wormwheel 5, thereby causing the cam 6 to reciprecate the lever 20, which in turn operates the piston, forcing air through the whistle to produce intermittent sounds. In the meantimel the supplemental armature has been energized and attracted by the fields, thereby .elvating the sign, as before described.

It is obvious that many changes maybe' signal consisting of a suit-able motor, a Worm connected to the shaft thereof, a Worrmwheel meshing therewith, a lug carried by the Wormwheel, a lever operated by the lug and an airpnmp having a sounding mechanism adapted to be operated by said lever, as and for the purpose described.

2. In combination with an electric motor adapted to operate a sounding mechanism, a supplemental armature journaled on the motor-shaft, carrying a sign having electrical connections whereby when the motor is operated the supplemental armature will become magnetized and attracted bythe fields ot' the motor to expose the sign, as and for the purpose described.

3. In a` device'of the character described, a signal consisting of a suitable motor, a Wormon the shaft thereof, a Worm-wheel meshing therewith, a lugl carried by the Worm-wheel, a lever operated by the'lu g, an air-p ump having a sounding mechanism adapted to be operated by the lever and a supplemental armature carrying a'sign journaled on the motorshaft adapted to be attracted the fields of the motor whenin operation for the purpose of displaying the sign, as and for the purpose described.

4. In a device of the character described, a signal consisting ot' an electric motor, a worm on the shaft thereof, a worm-wheel meshing therewith, a lug carried by the Worm-wheel, a lever having a cani operated by the lug, an air-pump having a whistle connected thereto,

, operated by the lever, a suppleinentalarniature journaled to the motor-shaft and connected in the same electric circuit therewith, said supplemental armature having its faces in close-proximity to the fields of the motor,

so that when the circuit is closed thefsupplemental armature will be attracted by the fields and a si gn attached to the supplemental armature adapted to be raised and lowered by the action of said supplemental armature, 'as and for lthe purpose described.

CHARLES RICHARD ALSOP.

Witn esses:

EUGENE J. CLARK, FRANK AfCoLEs. 

